The Dead Sea Scrolls have revolutionized our understanding of various aspects of the Bible, ancient Judaism, and the ancient Jewish religious milieu from which Christianity was born. BAR editor Hershel Shanks, when preparing his review of the new publication of the Great Isaiah Scroll (1QIsaa),1 noticed that one of the Biblical advances highlighted by that scroll was “isolated interpretive insertions.” Hershel asked me if I would describe for BAR readers what these “isolated interpretive insertions” were.